First time pool owner here. I recently purchased a home with a 24' above ground pool - the pool is roughly 14 years old, not sure on the age of the liner. The previous owners did not cover the pool during the winter (we are in Minnesota).
Over the winter I noticed that the top of the pool was shifting (see attached picture). The top lifted up off of the walls in areas around the pool about 2-3''. In the spring now everything is melted the top has shifted back down but the liner is bulging and sliding off in a few areas. I pulled the liner back up and secured it with some clips temporarily to prevent it from continually sliding off. Any recommendations for how to go about fixing this?
(Sorry, the picture is sideways. Not sure how to rotate it! You can see that it lifted up off of my deck.)